Torch tip with deflectors



Aug. 116, 1932. COBERLY 1,872,619

TORCH TIP WITH DEFLECTORS Filed April 15. 1930 A 7 roe/v5 y.

Patented Aug. 16, 1932 UNITED STATES PATENT OFFICE CLARENCE J. COBERLY,

I OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO KOBE, INC., 01'

HUNTINGTON PARK, CALIFORNIA, A CORPORATION OF CALIFORNIA TORCH TIP WITHDEFLECTORS Application filed April 15,

My invention relates to the art of cutting metals by the use of a gasjet such as a et of oxygen, and relates particularly to a torch tiphaving means therewith for producing a diverging jet of cutting gaswhich may be used to cut diverging slots in metal plates or the walls ofpipe.

My invention is of special utility in cutting slots in pipe so as tomake well screen or strainers therefrom. It is desirable that theseslots in the pipe walls diverge inwardly so as to provide a clearancewhich will permit free inward passage of sand or other particles ofsubstance of a size to pass the entrance of the slot. Accordingly, it isan object of this invention to providea torch tip having means therewithfor causing the cutting jet to diverge, thereby making it possible toemploy such jet to cut a diverging slot desirable in screens which areto be used in wells for the purpose of holding back sand, earth andgravel formations.

It is an object of the invention to provide a cutting torch with anexternal deflector which will operate on the issuing jet of cutting gasin a manner to cause divergence of such jet.

A further object of the invention is to provide a simple cutting tipconstruction having the valuable utility and the novel featureshereinabove indicated.

Further objects and advantages of the invention will be made evidentthroughout the following part of the specification.

Referring to the drawing which is for illustrative purposes only,-

Fig. 1 is an enlarged vertical cross section through a cutting tipembodying my invention.

Fig. 2 is a bottom plan view corresponding to Fig. 1.

Fig. 3 is a cross section of a deflector member of the character shownin Fig. 1, but having the deflector surface thereof set at a greaterangle.

Fig. 4 is a fragmentary section of a plane represented by the line 4-4of Fig. 1, showing the lower end of the cutting tip, the diverging jetproduced thereby and a metal wall cut by such jet.

1930. Serial No. 444,492.

Fig. 5 is an enlarged fragmentary vertical section of the lower end of acutting tip embodying an alternative form in which the invention may bepracticed.

Fig. 6 is a fragmentary cross section similar to Fig. 5 showing anotherconfiguration of the deflector member.

Fig. 7 is a bottom plan view similar to Fig. 2, but showing analternative form of replaceable or interchangeable deflector mem- Theembodiment of my invention as shown in Fig. 1 consists of a cuttingtorch tip 11 consisting of a metal body 12 of the general form used inwelding and cutting torch ti 5. This body 12 has a central passage 13 ora cutting gas, which in general practice is relatively pure oxygen, anda plurality of outer gas passages 14 through which an oxygen andacetylene mixture is delivered for the purpose of feeding heatin flames19 which issue from the lower en of the cutting tip 11 in the customarymanner indicated in Fig. 4. The extreme lower end of the central oroxygen passage 13 is counterbored at 15 to receive an outlet bushing 16having an axially extending opening or jet passage 17 therein the sizeof which opening determines the diameter of the jets of oxygen deliveredby the torch tip 11. The tip 11 includes a deflector member 18 so formedas to provide a deflector surface 20. This deflector surface 20 isformed on the end of a radial bar 21 which projects inward- 1y over thelower face of the tip 11 from a ring 22 replaceably secured on thecylindrical lower extremity 23 of the body- 12, means, such as a setscrew 24. being provided to secure the ring 23 against inadvertentremoval. In the form of the invention shown in Figs. 1 to 4, thedeflector represented essentially by the deflector surface 20 issituated at one side of the mouth of the jet passage 17 and isdownwardly and inwardly sloped in sub stantially the manner shown sothat the lower portion of the surface 20 will project into the path ofthe issuing jet of ox gen, causing the issuing jet of oxygen to divergein the manner of the jet 25 shown in Fig. 4. The

deflector causes the et to flare or diverge in a plane parallel to ahorizontal line drawn across the deflector surface 20, or in otherwords, the jet is flared laterally in the general direction indicated bythe deflector surface 20. When a diverging jet, such as indicated at 25is employed in the customary manner to cut a slot in a body of metal 26,which may be the wall of a pipe or the plate of a filter or strainer, aslot 27 will be formed having side walls 28 which diverge downwardlv.

In Fig. 3 I show a deflector member 18 of the same character as thedeflector 18 of Fig. l, but with the deflector surface 20 thereofcoinciding with a line B--B disposed at a greater angle from the axis ofthe cutting tip than the line A-A, which represents the slope of thedeflector surface 20 of F1 1. This increased slope of the deflector surace, as indicated in Fig. 3, causes greater divergence of the oxygen jetso as to produce greater divergence of the side walls defining a slotcut thereby. Deflector members 18 may be made with the deflectorsurfaces 20 thereof at various angles enabling the selection of adeflector member suited to the character of slot which is to be cut, itbeing remembered that the various deflector members 18 areinterchangeable.

In the form of the invention shown in Fig. 5, a deflector member 30 isformed integrally with the removable bushing 31 of a cutting tip 32having a central oxygen passage 33 and outer passages 34. The bushing'31 is provided with an axial gas passage 35, which extends from theupper end of the bushing to a flat face 36 near the lower end of thebushing. The deflector member 30 consists of a side portion of thebushing which projects downwardly beyond the face 36 and is equippedwith a deflector surface 37. The bushing 31 may be conveniently made inthe following manner.

A cylindrical bar of metal is first drilled inwardl from the end 38thereof to a stopping point indicated by dotted lines 40, this stoppingpoint being substantially coincident with the face 36. The face 36 andthe deflector surface 37 are then simultaneously formed by milling outthat portion of the lower end of the sleeve indicated by dotted lines 41and 42 and by the faces 36 and 37. lVhen this body of metal is removed,the lower end of the oxygen passage 35 is opened up so that a flow ofoxygen may pass freely therethrough to be deflected by the deflectorsurface 37 which projects slightly into the path of the issuing jet ofoxygen.

In Fig. 6, I show a bushing 45 having a deflector face 46 substantiallyparallel to the axis of the oxygen passage 47 extending through thebushing 45. The presence of the surface 46 at the side of the oxygenpassage 47, although not projecting directly into the path of theissuing jet of oxygen, has the effect of producing a slight divergenceof the jet. Experimental use of the invention in dicates that goodresults may be obtained from the use of a deflector having a flatdeflector surface placed so as to operate on the issuing jet of oxygensubstantiall in the manner shown, but other forms of efiectors may beemployed in conjunction with an issuing jet 0 oxygen with a greater orlesser degree of success.

In Fig. 7, I have shown a deflector member 50 of the general form of thedeflector member 18 illustrated in Figs. 1 and 3. This deflector memberincludes a bar portion 51, which projects radially inwardly from a ring52 and has the inner end 53 or deflector por tion proper thereof pointedand projected over the mouth of an oxygen passage 54, with which acutting torch body 55 is provided.

From the foregoing, it will be readily perceived that the deflectormeans employed to engage an issuing jet of oxygen may be made in variousforms and may be made integrally or detachable.

Although the simple and preferred form of the invention employs a singledeflector plate disposed at one side of the oxygen passage, theinvention also comprehends the use of more than one deflector member,such as deflector members placed in diametrally opposite positions, soas to engage opposite sides of the issuin jet of oxygen.

Although have shown the simple and practical forms of my invention, itis recognized that for the elements shown, other equivalent elements maybe employed to accomplish the same results in a substantially identicalmanner; therefore, the invention is not limited to the details of theforegoing disclosure, but shall be accorded the full scope of thefollowing claims.

I claim as my invention:

1. A cutting torch tip of the character described, comprising a tip bodyhaving a cutting gas passage therethrough and a deflector adjacent themouth of said gas passage for producing divergence of the jet issuingfrom said gas passage, said body having a plurality o heating gaspassages placed in circular arrangement around said cutting gas passage.

2. A cutting torch tip of the character described, comprising a tip bodyhaving a gas passage therethrough and a downwardly and inwardly slopingdeflector adjacent the mouth of said gas passage for producingdivergence of the jet issuing from said gas passage.

3. A cutting torch tip of the character described, comprising a tip bodyhaving a cutting gas passage therethrough and means below and adjacentthe mouth of said gas passage operating to produce divergence of the jetissuing from said gas passage, said body having a plurality of heatinggas passages placed in circular arrangement around said cutting gaspassage.

4. A cutting torch tip of the character described, comprising a tip bodyhaving a gas passage therethrough and a deflector member below the planeof the mouth of said gas passage, said deflector member having adeflector surface sloping downwardly and inwardly relative to the jetissuing from said gas pas sage and engaging a side of the jet issuingfrom said gas passage.

5. A cutting torch tip of the character described, comprising a tip bodyhaving a cutting gas passage therethrough and a deflector member belowthe plane of the mouth of said gas passage, said deflector member having a portion projecting into the path of an imaginary cylinderprojected from and having the same diameter as said cutting gas passage.

6. A cutting torch tip of the character described, comprising a tip bodyhaving a cutting gas passage therethrough and means below and adjacentthe mouth of said gas passage operating to produce divergence of the jetissuing from said gas passage, said means having a pa rt disposed at adistance from the axis of said gas passage less than the radius of saidgas passage.

7. A cutting torch tip of the character described, comprising a tip bodyhaving a gas passage thereth rough and a downwardly and inwardly slopingdeflector adjacent the mouth of said gas passage for producingdivergence of the jet issuing from,said gas passage, the lower portionof said deflector being disposed at a distance from the axis of said gaspassage less than the radius of said gas passage.

8. A jet diverging means of the character described, for use with acutting torch tip having a cutting gas orifice, comprising: a bodyhaving a face adapted for disposal adjacent the mouth of said cuttinggas orifice, said face sloping forwardly and inwardly relative to theaxis of said orifice; and means .for securing said body to said torchtip.

9. A jet diverging means of the character described, for use with acutting torch tip having a cutting gas orifice, comprising: a bodyhaving a face adapted for disposal adjacent the mouth of said cuttinggas orifice, said face sloping forwardly and inwardly relative to theaxis of said orifice; and means for securing said body to said torchtip, said means comprising a ring adapted to fit around the end of saidtorch tip.

10. A jet diverging means of the character described, for use with acutting torch tip having a cutting gas orifice, comprising: a bodyhaving a jet-engaging part; and means for securing said body to saidtorch tip in such position that said jet-engaging partwill be disposedat a distance from the axis of said 3 cutting gas orifice less than theradius of said 11. A cutting torch of the character described,including: a body having a cutting gas passage therein; and a tubularmember set into the forward end of said cutting gas passage, the openingof said tubular member forming a cutting gas orifice, there being a wallprojecting forwardly from one side of said tubular member having aninner face sloping forwardly and inwardly in position to engage andproduce divergence in a. cutting jet issuing from the said orifice.

In testimony whereof, I have hereunto set my hand at Los Angeles,California, this 10th day of April, 1930.

' CLARENCE J. COBERLY.

